1. How is aqua regia made? (1)
a) 1 part nitric acid to 2 parts hydrochloric acid
b) 1 part nitric acid to 1 part hydrochloric acid
c) 2 parts nitric acid to 3 parts hydrochloric acid
d) 1 part nitric acid to 3 parts hydrochloric acid
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Answer:
option d is the correct answer
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